GGTase-I^GST

For general laboratory use.

Shipping: shipped on dry ice

Storage Conditions: store at -80 °C
avoid freeze/thaw cycles

Shelf Life: 12 months

Molecular Weight: α: 44 kDa, β: 38 kDa

Accession number: NM_031082

Purity: > 90 % (SDS-PAGE)

Form: liquid (Supplied in 25 mM HEPES pH 7.2, 25 mM NaCl and 5 mM DTT)

Activity: 1 pmol of GGTase-I will transfer 5 pmol of Farnesyl to RhoA in 15 min at 37°C.

Description:
GGTase-I (Geranylgeranyltransferase-I) catalyzes the transfer of the farnesyl and geranylgeranyl groups from farnesyl and geranylgeranyl-diphosphate to proteins containing a C-terminal CaaX motif, where 'C' is a conserved cysteine that is the site of farnesyl modification, 'a' is usually an aliphatic amino acid, and 'X' is leucine or phenylalanine. Farnesyltransferase (FT) and GGTase-I are closely related, sharing a common α subunit and 30% identity in their β subunits. The GST-Tag facilitates the protein`s application in typical GST pull-down assays.

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Selected References:
Lackner et al. (2005) Chemical genetics indentifies Rab geranylgeranyl transferase as an apoptotic target of farnesyl transferase inhibitors. Cancer Cell. 7:325.
Yokoyama et al. (1993) Purification of a mammalian protein geranylgeranyltransferase. Formation and catalytic properties of an enzyme-geranylgeranyl pyrophosphate complex. J. Biol. Chem. 268:4055.